前言:这是CSA W186《钢筋混凝土结构中钢筋的焊接》的第四版。它取代了1990年、1981年和1970年出版的以前版本。几项条款已被广泛更新，也有补充条款。这些修订是为了反映近年来获得的经验和知识。一个重要的考虑是确保本标准继续与极限状态（荷载系数）设计相关。本版中介绍的新项目涉及直接对接接头无损检测的X射线方法和非破坏性试验的介绍- 承重接头。本标准涉及钢筋熔焊、钢筋混凝土结构中钢筋焊缝的焊接设计、制造和检验公司的认证。它不是产品标准，不能用于评估或批准产品。其目的不是取代管理特定产品的规范和标准。本标准规定了公司必须满足和遵守的最低要求，以获得和维持认证。认证由本标准的管理机构加拿大焊接局（CWB）授予符合本标准要求的公司。 公司认证表明，符合公司认证部门的要求，公司拥有生产令人满意的焊缝和焊接件所需的组织、人员、焊接程序和设备。合格焊缝和焊接件的生产由认证公司负责。买方有责任通过充分检查确保达到所需质量。尽管CWB对认证公司进行定期检查，以确保其继续遵守本标准的要求，但这些检查并不能消除对认证公司质量控制方法或买方全面检查计划的需求。 范围:1.1本标准适用于公司认证。认证与公司的焊接能力有关。认证不应被解释为认可被认证公司的任何产品或服务。注:本标准的要求基于以下原则:认证公司对其生产的焊接产品的质量负有全部责任，且该责任不得转移至其雇佣或保留的人员或本标准的管理人员。1.2本标准规定了从事钢筋熔焊的公司的a）认证要求及其人员资格和焊接程序； b） 使用变形钢筋的焊接连接件的设计、制造和检查； c） 将变形钢筋直接焊接至彼此或通过拼接构件进行焊接；和 d） 在预制或现浇混凝土施工中，将变形钢筋焊接到结构或低合金钢构件上，在制造车间或现场用作锚固。为代替满足本标准的要求，将钢筋焊接到钢构件上的公司可采用CSA W47的测试要求。1并让其焊接人员和焊接程序接受CSA W47。 1.注:一些可以申请CSA W47认证的应用示例。1.在建筑物、起重设备、底板、梯子、猫道等上安装预制板时，是否将变形钢筋（锚）焊接到结构或硬件元件上。当需要焊接钢筋以加固混凝土、预制、现浇施工等应用中的混凝土时，CSA W186的规定适用。以下标准要求的应用需要根据本标准进行认证:CSA A448。1，A23。1，A23。3，A23。4，N287。2，N287。3，N287。4，N287。5，S304。1、S6、S474、S850和Z98。 1.3本标准规定了a）焊接工程师的要求；b） 焊接主管；c） 焊工和焊接操作员；（d）文件。注:1）本标准中规定的焊工和焊接操作员资格要求旨在证明个人的基本焊接技能，并提供一种方法来验证个人在钢熔焊方面的持续能力。2） 本标准包含了对其他司法管辖区合格人员的认可规定。1.4本标准包括以下规定:a）保护金属极电弧焊（SMAW）； b） 气体保护金属极电弧焊（GMAW）；c） 药芯焊丝电弧焊（FCAW）；d） 金属芯电弧焊（MCAW）；ande）钨极气体保护焊（GTAW）。1.5本标准不包括板材、角钢或其他结构构件之间的a）焊接要求。CSA W59涵盖了这些类型的应用；b） 用于预应力钢或钢筋或棒垫的变形钢筋的焊接，其焊接包含在制造规范中；andc）焊接规定屈服强度超过550 MPa（80 ksi）的钢筋。1.6本标准未涉及与焊接和焊接实践相关的安全问题。 注:CSA W117。除现行适用的工作场所健康和安全法规外，还应遵守焊接安全规定。本标准的使用者有责任在使用前建立适当的安全和健康实践，并确定监管限制的适用性。1.7本标准不涉及水下焊接活动。1.8本标准不涉及不锈钢的焊接。1.9在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议； “可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。1.10国际单位制给出的数值为本标准中的记录单位。括号中给出的值仅供参考和比较。

Preface:This is the fourth edition of CSA W186,Welding of reinforcing bars in reinforced concrete construction. It supersedes the previous editions published in 1990, 1981, and 1970.Several clauses have been updated extensively and there have been additions as well. The revisions were made to reflect the experience and knowledge gained during recent years. An important consideration was to ensure that this Standard continues to relate to the limit states (load factor) design.The new items introduced in this edition relate to the X-ray method for non-destructive examination of direct butt joints and the introduction of non-load-bearing joints.This Standard deals with the certification of companies for fusion welding of reinforcing bars, weld design, fabrication, and inspection of welds of reinforcing bars in reinforced concrete construction. It is not a product Standard and cannot be used to evaluate or approve products. It is not intended to supersede Codes and Standards that govern specific products.This Standard stipulates minimum requirements that a company must meet and adhere to in order to obtain and maintain certification. Certification is granted by the Canadian Welding Bureau (CWB), the administrative body for this Standard, to companies that comply with the requirements of this Standard. Certification of a company indicates that, consistent with the requirements of the division in which the company is certified, it has the organization, personnel, welding procedures, and equipment required to produce satisfactory welds and weldments.Production of satisfactory welds and weldments is the responsibility of the certified company. It is the responsibility of the purchaser to ensure, through adequate inspection, that the required quality is attained. Although the CWB makes periodic inspections of certified companies to ensure that they continue to comply with the requirements of this Standard, these inspections do not eliminate the need for a certified company's quality control methods or a purchaser's comprehensive inspection program.Scope:1.1This Standard governs the certification of companies. Certification pertains to the capability of the company with respect to welding. Certification should not be construed as approving any products or services of the certified company.Note:The requirements of this Standard are based on the principle that a certified company has full responsibility for the quality of the welded product it produces, and this responsibility cannot be transferred to its employed or retained personnel or to the administrator of this Standard.1.2This Standard provides the requirements for thea) certification of companies engaged in the fusion welding of reinforcing bars and the qualification of their personnel and welding procedures;b) the design, fabrication, and inspection of welded connections utilizing deformed reinforcing bars; c) welding of deformed reinforcing bars either directly to each other or through splice members; and d) welding of deformed reinforcing bars to structural or low-alloy steel members used as anchorages in precast or cast-in-place concrete construction either in the fabricating shop or in the field.In lieu of meeting requirements of this Standard, companies performing welding of reinforcing bars to steel elements may apply testing requirements of CSA W47.1 and have their welding personnel and welding procedures accepted with CSA W47.1.Note:Some examples of applications that can apply certification of CSA W47.1 are welding of deformed bars (anchors) to structural or hardware elements when installing precast panels to buildings, lifting devices, base plates, ladders, catwalks, etc. Whenever the welding of reinforcing rebars is required to reinforce the concrete in applications like concrete, precast, cast in place construction, etc., provisions of CSA W186 apply. Applications required by the following standards require certification to this standard: CSA A448.1, A23.1, A23.3, A23.4, N287.2, N287.3, N287.4, N287.5, S304.1, S6, S474, S850, and Z98.1.3This Standard stipulates requirements fora) welding engineers;b) welding supervisors;c) welders and welding operators; andd) documentation.Notes:1)The qualification requirements for welders, and welding operators specified in this Standard are intended to demonstrate an individual's basic welding skills and to provide a means of verifying that individual's continuing ability in the fusion welding of steel.2)Provisions for recognition of personnel qualified under other jurisdictions are included in this Standard.1.4This Standard includes provisions for the following:a) shielded metal arc welding (SMAW);b) gas metal arc welding (GMAW);c) flux-cored arc welding (FCAW);d) metal-cored arc welding (MCAW); ande) gas tungsten arc welding (GTAW).1.5This Standard does not cover requirements for thea) welding of plates, angles, or other structural members to one another. These types of applications are covered by CSA W59;b) welding of deformed reinforcing bars used for pre-stressing steel or for bar or rod mats for which the welding is covered by the manufacturing specification; andc) welding reinforcing bars with specified yield strength exceeding 550 MPa (80 ksi).1.6This Standard does not address the safety issues associated with welding and welding practices.Note:CSA W117.2 addresses safety in welding and should be followed, in addition to any applicable workplace health and safety legislation in effect. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.7This Standard does not address underwater welding activities.1.8This Standard does not address the welding of stainless steel.1.9In this standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.1.10The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.